Chen Fan didn't stay in the Cangmin Realm for the rest of his past life after being taken from Earth by Master Cangqin. In fact, the Cangmin Realm was a famous battling sacred ground in the universe. Its developer, Master Cangqin, had lived almost a million years and he had risen to fame which was upheld for five hundred thousand years. His Dharma Power was known to be earth-shattering—being able to create the mysterious Cangmin Realm in space, his power was indeed unimaginable. Besides, he was also famous for promoting new cultivators.
Master Cangqin liked to travel around worlds to recruit the best cultivators, so he could take them to the Cangmin Realm to cultivate and fight.
The one who was able to tear the Cangmin Realm apart and stand before him would have the chance to follow Master Cangqin and become his inner circle disciple.
An inner circle disciple of a Perfected Immortal.